The best education

Author Michael Deren
Published
October 01, 2010 - 11:00am

We all know many high schools teach shop classes, and these classes are where many metalworking professionals get their first taste of machining. Other training options include vocational tech schools and college classes. But where did you receive your most important education?

I believe some of the best education is provided on the job. Not necessarily by your employer, but by your coworkers. Sure, you learned basic feeds and speeds from a Machinery’s Handbook in school. That’s also where you probably learned how to setup a nice cut block in a vise or a piece of round bar in a lathe. 

But where did you learn how to set up a casting on a machining center? Where did you learn about high-speed machining? Where did you learn to program that snazzy multiple-axis turning center with a bar feeder and programmable tailstock? Where did you learn to machine nickel-base superalloys? I’ll bet it was on the job.

Schools are great at teaching the basics. Without a basic foundation, it would be difficult to succeed in any endeavor. However, alternatives to traditional school programs can also be effective. For example, an apprenticeship combined with some schooling can be as good or better than just formal education. 

If you’re just out of school and a newbie to the business, find a senior machinist to be your mentor. This must be a person you can consult if you have any questions. Have him critique your setups. If you’re programming a part, have him evaluate your toolpaths and logic. Maybe a toolpath needs to be moved elsewhere in the program. If you can’t see the logic in what he’s doing, ask why. You’ll be amazed at how much you can learn from an experienced professional. 

Wherever I’ve worked, I’ve always taken the approach that I can learn more. Observe the most senior people in your department and don’t be afraid to ask questions. That way, you’ll expand your knowledge base in the trade and eventually start developing your own ideas and techniques.

This doesn’t apply only to machinists. Whether you’re a programmer, manufacturing engineer, mechanical engineer or whatever, no one knows everything at the onset of their career. On my first job, I learned materials, inspection, machining and programming. Being naturally inquisitive helps, but so does listening. Listen, then act.

At another company I learned about high-volume production and how to program multiple-axis turning centers. I also learned work cell concepts. At still another company, I learned CAD and how to program robots. The list goes on. 

At each place I asked the senior people questions and listened. I tried their techniques and found that they almost always worked well. I then formulated my own ideas and concepts to improve on what I had learned. Certain setups, for example, were tried and true; others had room for improvement.

I’m no genius. I just like to learn. But I also like to share. When someone new arrives and wants a hand with something or has a question, I’m there to help as much as I can. If I don’t know something, I’ll get the answer or point him in the right direction.

To all of the individuals who have taught me over the years, thank you. I appreciate all you’ve done for me in my career. To all junior people, when you become the senior people in your facility, remember to share. It’s your obligation to pass it forward.

Related Glossary Terms

  • centers

    centers

    Cone-shaped pins that support a workpiece by one or two ends during machining. The centers fit into holes drilled in the workpiece ends. Centers that turn with the workpiece are called “live” centers; those that do not are called “dead” centers.

  • computer-aided design ( CAD)

    computer-aided design ( CAD)

    Product-design functions performed with the help of computers and special software.

  • lathe

    lathe

    Turning machine capable of sawing, milling, grinding, gear-cutting, drilling, reaming, boring, threading, facing, chamfering, grooving, knurling, spinning, parting, necking, taper-cutting, and cam- and eccentric-cutting, as well as step- and straight-turning. Comes in a variety of forms, ranging from manual to semiautomatic to fully automatic, with major types being engine lathes, turning and contouring lathes, turret lathes and numerical-control lathes. The engine lathe consists of a headstock and spindle, tailstock, bed, carriage (complete with apron) and cross slides. Features include gear- (speed) and feed-selector levers, toolpost, compound rest, lead screw and reversing lead screw, threading dial and rapid-traverse lever. Special lathe types include through-the-spindle, camshaft and crankshaft, brake drum and rotor, spinning and gun-barrel machines. Toolroom and bench lathes are used for precision work; the former for tool-and-die work and similar tasks, the latter for small workpieces (instruments, watches), normally without a power feed. Models are typically designated according to their “swing,” or the largest-diameter workpiece that can be rotated; bed length, or the distance between centers; and horsepower generated. See turning machine.

  • metalworking

    metalworking

    Any manufacturing process in which metal is processed or machined such that the workpiece is given a new shape. Broadly defined, the term includes processes such as design and layout, heat-treating, material handling and inspection.

  • toolpath( cutter path)

    toolpath( cutter path)

    2-D or 3-D path generated by program code or a CAM system and followed by tool when machining a part.

  • turning

    turning

    Workpiece is held in a chuck, mounted on a face plate or secured between centers and rotated while a cutting tool, normally a single-point tool, is fed into it along its periphery or across its end or face. Takes the form of straight turning (cutting along the periphery of the workpiece); taper turning (creating a taper); step turning (turning different-size diameters on the same work); chamfering (beveling an edge or shoulder); facing (cutting on an end); turning threads (usually external but can be internal); roughing (high-volume metal removal); and finishing (final light cuts). Performed on lathes, turning centers, chucking machines, automatic screw machines and similar machines.

Author

Machinist's Corner Columnist

Michael Deren is a manufacturing engineer/project manager and a regular CTE contributor. He can be reached via e-mail at mderen1@wi.rr.com.